what’s SIP Timer
One of the most common error situations in the context of VoIP SIP telephony
499 caller is forbidden when the 3CX extensions cannot call each other
Background: Users reported that after upgrading the 3CX server, their mobile app and IP
What domains and ports need to be allowed for accessing 3CX when installing it on Linux?
When connecting to the internet with a computer, security is one of the essential
3CX extension accidentally dialed *61
Background Some of our customers asked us that an extension of their 3CX system
How to check 3CX max concurrent calls
Not being able to view the maximum concurrency reached by 3CX should be a
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